TY  - JOUR
AU  - V. V. Dyakin
AU  - S. I. Petrukhnovskii
TI  - On discreteness of~the~spectrum of~some operator sheaves associated with a~periodic Schr\"odinger equation
JO  - Teoretičeskaâ i matematičeskaâ fizika
PY  - 1988
SP  - 94
EP  - 102
VL  - 74
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TMF_1988_74_1_a7/
LA  - ru
ID  - TMF_1988_74_1_a7
ER  -